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Ko Samui

Cheap flights from O'ahu to Ko Samui (USM)

HNL — USM
Apr 9 — Apr 161
Wed 4/9
Wed 4/16
1 adult, Economy
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Best time to book a flight from O'ahu to Ko Samui

Have a flexible travel schedule? Discover the best time to fly to Ko Samui from O'ahu with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from O'ahu to Ko Samui

What is the cheapest time of day to fly from FUW to USM?

Find hourly flight availability from O'ahu to Ko Samui. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 4, 2025.

When flying from O'ahu to Ko Samui, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Ko Samui by month

Plan your trip to Ko Samui by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ko Samui ranges from 2.3 - 19.3 inches per month. November is typically the wettest month, when rainfall can reach 19.3 in. February is typically the driest time to visit Ko Samui when rainfall is around 2.3 in.

Temperature in Ko Samui by month

Plan your trip to Ko Samui by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ko Samui, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 80.6 F).

Related info for your journey

Find useful and relevant information for your journey from O'ahu to Ko Samui. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Ko Samui from O'ahu?

    If you book a flight to Ko Samui from O'ahu, you will be flying to Ko Samui, which is the city’s only airport. Ko Samui (USM) is located 2.1 mi from the center of Ko Samui.

  • Can I find deals for flights from O'ahu to Ko Samui that include hotel bookings?

    Yes. In addition to deals on O'ahu to Ko Samui flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from O'ahu to Ko Samui?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from O'ahu to Ko Samui.

  • Can I find deals for business class flights from O'ahu to Ko Samui?

    Yes. Cheapflights offers flight deals from O'ahu to Ko Samui by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near O'ahu?

Book flights to O'ahu if you plan to visit one of these locations
Ko Tao
Ko Pha Ngan

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